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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef AGS_ENGINE_AC_MOVE_LIST_H
#define AGS_ENGINE_AC_MOVE_LIST_H
#include "ags/lib/allegro.h" // fixed math
#include "ags/engine/game/savegame.h"
#include "ags/shared/util/geometry.h"
namespace AGS3 {
// Forward declaration
namespace AGS {
namespace Shared {
class Stream;
}
}
using namespace AGS; // FIXME later
#define MAXNEEDSTAGES 256
#define MAXNEEDSTAGES_LEGACY 40
enum MoveListDoneFlags {
kMoveListDone_X = 0x01,
kMoveListDone_Y = 0x02,
kMoveListDone_XY = kMoveListDone_X | kMoveListDone_Y
};
enum MoveListSvgVersion {
kMoveSvgVersion_Initial = 0, // [UNSUPPORTED] from 3.5.0 pre-alpha
kMoveSvgVersion_350, // new pathfinder, arbitrary number of stages
kMoveSvgVersion_36109, // skip empty lists, progress as float
};
struct MoveList {
int numstage = 0;
// Waypoints, per stage
Point pos[MAXNEEDSTAGES];
// xpermove and ypermove contain number of pixels done per a single step
// along x and y axes; i.e. this is a movement vector, per path stage
fixed xpermove[MAXNEEDSTAGES]{};
fixed ypermove[MAXNEEDSTAGES]{};
int onstage = 0; // current path stage
Point from; // current stage's starting position
// Steps made during current stage;
// distance passed is calculated as xpermove[onstage] * onpart;
// made a fractional value to let recalculate movelist dynamically
float onpart = 0.f;
uint8_t doneflag = 0u;
uint8_t direct = 0; // MoveCharDirect was used or not
// Dynamic fixups, not serialized
// Final section move speed and steps, used when an object
// finishes one of the axes sooner than the other
fixed fin_move = 0;
float fin_from_part = 0.f;
const Point &GetLastPos() const { return numstage > 0 ? pos[numstage - 1] : pos[0]; }
// Gets a movelist's step length, in coordinate units
// (normally the coord unit is a game pixel)
float GetStepLength() const;
// Gets a fraction of a coordinate unit that is in progress of stepping over;
// (normally the coord unit is a game pixel)
float GetPixelUnitFraction() const;
// Sets a step progress to this fraction of a coordinate unit
void SetPixelUnitFraction(float frac);
void ReadFromSavegame_Legacy(Shared::Stream *in);
AGS::Engine::HSaveError ReadFromSavegame(Shared::Stream *in, int32_t cmp_ver);
void WriteToSavegame(Shared::Stream *out) const;
};
} // namespace AGS3
#endif
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